StudioPRO 48 Inch Octagon Softbox Photography Light Diffuser and Modifier with Bowens Speedring Mount For Monolight Photo Studio Strobe Lighting One (1) Octagon Softbox and One (1) Bowens Speedring Two (2) Diffuser Panels Diffuser panels allows for adjustment of output of the strobe head Material: Nylon Fitment: Bowens speedring adaptor